/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2024 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kse.gui.actions;

import java.awt.Toolkit;
import java.text.MessageFormat;

import javax.swing.ImageIcon;
import javax.swing.KeyStroke;

import org.kse.gui.KseFrame;
import org.kse.gui.error.DError;
import org.kse.utilities.history.KeyStoreHistory;
import org.kse.utilities.history.KeyStoreState;

/**
 * Action to undo an action.
 */
public class UndoAction extends KeyStoreExplorerAction {
    private static final long serialVersionUID = 1L;
    private final String defaultName;

    /**
     * Construct action.
     *
     * @param kseFrame KeyStore Explorer frame
     */
    public UndoAction(KseFrame kseFrame) {
        super(kseFrame);

        defaultName = res.getString("UndoAction.text");

        putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke('Z',
                                                         Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx()));
        putValue(LONG_DESCRIPTION, res.getString("UndoAction.statusbar"));
        putValue(NAME, defaultName);
        putValue(SHORT_DESCRIPTION, res.getString("UndoAction.tooltip"));
        putValue(SMALL_ICON,
                 new ImageIcon(Toolkit.getDefaultToolkit().createImage(getClass().getResource("images/undo.png"))));
    }

    /**
     * Enable or disable the action.
     *
     * @param enabled True to enable, false to disable it
     */
    @Override
    public void setEnabled(boolean enabled) {
        super.setEnabled(enabled);

        if (enabled) {
            KeyStoreState currentState = kseFrame.getActiveKeyStoreHistory().getCurrentState();
            putValue(NAME, MessageFormat.format(res.getString("UndoAction.dynamic.text"),
                                                currentState.getActionDescription()));
        } else {
            putValue(NAME, defaultName);
        }
    }

    /**
     * Do action.
     */
    @Override
    protected void doAction() {
        try {
            KeyStoreHistory history = kseFrame.getActiveKeyStoreHistory();

            history.getCurrentState().setPreviousStateAsCurrentState();

            kseFrame.updateControls(true);
        } catch (Exception ex) {
            DError.displayError(frame, ex);
        }
    }
}
